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shuxuejianmo_8
说明: (拟合)
用给定的多项式,y=x3-6x2+5x-3,产生一组数据(xi,yi,i=1,2,…,n),再在yi上添加随机干扰(可用rand产生(0,1)均匀分布随机数,或用rands产生N(0,1)分布随机数),然后用xi和添加了随机干扰的yi作的3次多项式拟合,与原系数比较。
如果作2或4次多项式拟合,结果如何?
((Fitting) with a given polynomial, y = x3-6x2+5 x-3, generated a set of data (xi, yi, i = 1,2, ..., n), then add a random disturbance yi ( can be generated rand (0,1) uniformly distributed random number, or rands generated N (0,1) distribution of random numbers), and then added with xi and yi for random interference of the 3 times polynomial fitting, and the original coefficient. If 2 or 4 times for polynomial fitting, the result?)
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- 积分:1
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EVENT_DRIVEN_WIRELESS_SENSOR_NETWORK
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经验小波变换结合EMD的自适应性和小波分析的理论框架 EWT
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MATLAB
根据)EF 特性中的对比度敏感度,
即空间频率特性曲线,对图像进行二维多级小波分解,由分解后的各小波分量,提取各频段相应的亮
度、清晰度和相关度指标;然后将这三个指标的几何平均与频段加权系数的内积做算术平均,以此作
为图像质量的综合评价指标(According to) EF characteristic of contrast sensitivity, that is spatial frequency characteristic curve, the image is two-dimensional multi-level wavelet decomposition, the decomposition of the wavelet component, extract the frequency band corresponding brightness, clarity and relevance of indicators then the geometric mean of these three indices and the band doing weighted coefficient of the arithmetic mean within the product as a comprehensive evaluation of image quality index)
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PID
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asv
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EvChanAlgorithm
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spline3
三次样条插值函数:自己编写的三次样条插值函数(cubic spline interpolation)
- 2014-12-16 10:12:41下载
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